Correspondence (154) e
August 20, 1997 . _
Nicoli Engineering
P.O. Box 23784
Tigard, OR 97281 OREGON /1 RE: Industrial Park Site Plan Review
15615 SW 74th
PC #: 8 -39c SIT #: 97 -0030
Submittal documents for the above referenced project have been reviewed for
conformance with the applicable 1996 Oregon Specialty Codes and other applicable
codes and standards. The following comments are noted:
Provide a seismic site hazard investigation report, OSSC, Section 1804.2 and
• 1804.5.
It appears that the total footprint area of the proposed buildings exceeds the area
allowed for VN construction. Using a typical occupancy group F2/S2, the basic
(9I allowable area is 12,000 square feet. The allowable area increase, OSSC
)505.1 .1 is 50 %, therefore the maximum allowable area for two more buildings on
''� the same property (OSSC, Section 503.3, exception) is 18,000 square feet.
�" Please show how you intend to comply.
Drawing 1.5, the storm drainage slope between Building A and B is less than 1%
,4 as required by OPSC, Table 11 -2. Show how you intend to achieve compliance.
Drawing 1.5, the slope from CB #5 is 4 %. In order to carry the flow at this point,
yGS the minimum slope shall be 5 %. OPSC, Table 11 -2.
5. No building shall be constructed, altered, enlarged, moved or repaired in a
manner that by reason of size, type of construction, number of stories,
occupancy or any combination thereof, creates a need for a fire flow in excess of
3,000 gallons per minute at 20 psi residual or exceeds the available fire flow at
the site of the structure [UFC, Section 903.3].
A. Provide Fire Flow Testing pursuant to NFPA 291 using the enclosed
W " 1S j o►��< v "Hydrant Flow Test Report Form." •
B. Complete the enclosed "Fire Flow Work Sheet" and forward to Tualatin
r�
J Valley Fire and Rescue, 4755 SW Griffith Dr. [P.O. Box 4755] Beaverton,
a ¢J k OR 97076 [Ph. 526 - 2469], and return a copy to the City of Tigard, attn.
I Plans Examiner.
r Il ote: These documents shall be on file before a building permit will be issued.
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
Industrial Park Site Plan Review
PC #: 8 -39c SIT #: 97 -0030
Page #2
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FIRE AFETY, , ; a : , iA01 Cli « . � :�.. . r -
\(� Based on the building area, you will require four fire hydrants. UF 903.4.2.1
! " I and Table A- III -A -1. /
Al lyb
k r v
\ )- 1 2. Approved fire apparatus access roadways and fire fighting water supp -Shall
f ') be installed and operating prior to construction on the site. UFC, Section 870.4. __
Please submit two copies of revised submittal documents and a letter indicating our
p 9Y
response to the above comments for review. Please call me at (503) 639 -4171 if you
have any questions.
Sincerely,
Ro ert Poskin, CBO
PLANS EXAMINER
m arm.y.NOOnwt.Sl W.xpceox.noo
CITY OF TIGARD, OREGON
Hydrant Flow Test Report
Location: Date
Test Conducted By: Time
Representative of:
Witness:
State purpose of test:
Consumption rate during test: Pumps used in test Yes ( ) No ( ) How many?
Hydrant Flows: All A/2 A/3 A/4
Nozzle Size: Pitot Reading: Discharge Coefficient: gpm
Static: B psi Residual: B psi
Projected results 20 psi residual gpm or @a psi Residual gpm
Remarks:
Location map: Show line sizes and distance to nett cross connected line. Show valves and hydrant branch size,
Indicate ( NORTH), show flowing hydrants - Labels A/1 - A/2 - A/3 A/4, show location of static and residual - Label
KO w
Submit this form to the City of Tigard Building Department. "ATTN" Plan Review, 13125 SW
Hall Blvd.. Tigard, Oregon 97223 - (503) 639 -4471
Tualatin Valley Fire & Rescue
Rev. 10 -5 -94
and
Beaverton Fire Department
4755 S.W. Griffith Dr. P.O. Box 4755
Beaverton, OR 97076 (503) 526 - 2469 FAX 526 -2538
REQUIRED FIRE FLOW
WORK SHEET t
TO BE USED WITH FIRE FLOW CALCULATION INSTRUCTIONS
1) Building Name:
Fire Dept Use Only
FMZ / /
2) Address:
City/Co
3 ) Type of Structure: (Check 1 Box) Date:
❑ I FR, IT FR •
❑ U One Hour, III One Hour .
❑ TV Heavy Timber, V-One Hour
❑ II-N, 111-N
❑ V -N
4 ) Total Building Square Footage: _ _ _ . _
Use the Largest ate floor area of all floors inclusive of mezzanines as defined
by UBC Section 407 floor area. In Types•I and II FR construction only, the three
largest successive floor areas shall be used.
5) Building Fire Flow (BFF): . from UFC Table A- 1II -A -1.
(See Fire Flow Calculation Instruction Handout, Pg. 8)
6)1 a Single Occupancy Hazard:
-
(BFF) X ____ (Occupancy Factor) = Required Fire Flow (fill in line 8)
b Multiple Occupancy Hazard:
Occupancy
occ sq f t _ bldg sq ft = %BA i i
Occupancy
occ sgft= bldg sgft= %BA
Occupancy
occ sgft _ bldg sgft= %BA
Occupancy
occ sq ft _ bIdg sq ft = %BA
7 ) Occupancy X Factor.
% BA X gpm BFF X
% BA X (occ fact) = FF i i i
gpm BFF X (occ fact) = FF
% BA X gpm BFF X (occ fact) = FF
% BA X ___ gp BFF X (occ fact) = FF
(Fill in Line 8) TOTAL
Required Fire Flow Work Sher' ' -
Page 2
8) Total Required Fire Flow:
9) Credited Required Fire Flow: (Use only one of lines a, b, or c)
a. Multiply Line 8 by 75% for full fire alarm or
b. Multiply Line 8 by 50% for automatic sprinkler protection
or
c. Multiply Line 8 by 25% for central station supervised automatic sprinkler
protection
10) Available Fire Flow
t Round off numbers to nearest whole tt Building Area ttt Fire Flow
Example: Apartment building with garages Type V -N construction, aggregate square
footage 12,000 square feet. Garages 3,500 square feet, apartments ,8,500
square feet, BFF = 3,000 gpm. -
Apartment 8,500 occ sq ft _ 12,000 bldg sq ft = 71% BA _
Garages 3,500 occ sq ft = 12,000 bldg sq ft = 29% BA
71% (BA) X 3,000 gpm (BFF) X 1.0 (occ fac) = 2,130 gpm
29% (BA) X 3,000 gpm (BFF) X 1.1 (occ fac) = 957 gpm
Total Required Fire Flow 3087 gpm
The required fire flow of this building is greater than 3,000 gpm, therefore, either area
separation walls (see Fire Prevention Ordinance Sec. 22 or Fire Flow Calculation
Instructions, Pg. 3 Sec. 4) complying with UBC Sec. 505(0 would need to be installed or
one of the automatic sprinkler alternates or central station supervised alarm system (see Fire
Prevention Ordinance Sec. 23E or Fire Flow Calculation Instructions, Pg. 7 Sec. 5(e)). One
may also upgrade the type of construction. The same applications are true if required fire
flow is greater than available fire flow.
1.If single occupancy hazard, place answer on Line 8. If multiple
occupancy hazard, skip to line 6b. When multiple occupancy hazards
are housed within a single fire flow area, the building fire flow
shall be factored out to the ratios of floor areas housing various
occupancies. Each portion of the building fire flow for a given
occupancy hazard shall be multiplied by the occupancy factor and
then added together to produce a required fire flow.
2. This information is available from the fire district unless the
building is in a newly developed area or new fire mains are to be
installed. If the latter is the case, please provide engineered
calculations showing estimated flows for the area.